The sustainability of tourism development is an ethical requirement and factor of competitiveness in the Mediterranean, particularly for islands and fragile coastal zones, to preserve its vulnerable economic, natural, cultural and social heritage. Not only do Environmental abuses impoverish island and coastal heritage, but as today's Tourismists are increasingly demanding, the quality, diversity and specific Environmentalonmental and cultural attributes of Tourismism supply are a key factor of competitiveness. The final aim of SHIFT (Sustainable Tourismism In Fragile Territories) is to experiment strategies to foster sustainable Tourismism in Mediterranean fragile coastal areas and islands through a transnational partnership proposing an IQM model to optimise suppl